You can check on the bottle to see how many miles the oil you use is rated for, but most synthetic oils will be fine driving up to 7,500 miles without a change. Keep in mind that many oil manufacturers tend to underestimate how long their oil will last in order to keep you coming back for refills more often. Because of this it is generally safe to drive one to two thousand miles more on your engine oil than the bottle advertises.
malcolm park / Getty Images. Sirius, also known as the Dog Star, is the brightest star in the night sky. Its name comes from the Greek word for scorching. It's actually a double star system, with a very bright primary and a dimmer secondary star. Distance: 8.6 light-years.
Spica, Alpha Virginis, is the brightest star in the southern constellation Virgo and the 16th brightest star in the sky. It is a blue subgiant star located at a distance of 262 light years from Earth. Spica is really a close binary star system. It is one of the nearest massive binary stars to the solar system.